Mansion by the Sea

The Mansion on the Sea, formerly Southernmost House, is a meticulously restored late-19th-century Victorian mansion converted into an adults-only, 18-room boutique hotel located at the southernmost tip of the continental U.S. Guests can enjoy oceanfront guestrooms with individual decor, a heated zero-entry infinity pool, free continental breakfast, and personalized concierge service—all within walking distance of Duval Street and Key West’s top attractions.